It is true that entries have been called for participation in Singapore. I verified that with the producers. But I have no idea on the where, what and how questions.
I do not know the last date for the submission of entries. If you want to take part why wait for a last date huh? :)
Is it essential to know classical music? That is not part of the rules and regulations. So I guess the answer is no.
Vijay.indya.com allows you to upload Mp3s as well and it is an additional mode of applying other than Audio CDs/Cassettes. It is to facilitate applying this time I would presume.
I do not know the basis of the selection process as long as the initial entries are concerned.
As for the dates of the walk-in auditions and venue, it will be announced on TV.
I have received several mails from the US and Canada asking if we could conduct a Super Singer there. It will be brilliant to do be a part of that, but I guess there are several factors involved. And again I do not have the answer to that question.